title: Complex data produce better characters.
mesh_terms: D019659:Asteraceae / Q000033:anatomy & histology* / Q000235:genetics; D002965:Classification / Q000379:methods*; D006824:Hybridization, Genetic; D010802:Phylogeny; D035261:Plant Components, Aerial / Q000033:anatomy & histology*; D025341:Principal Component Analysis; D012107:Research Design